Roast the head of garlic by preheating your oven to 325 degrees. Cut the top off of a head of garlic and cut the bottom (the root end) so that the garlic will sit flat. Remove most of the papery skin from the garlic, but leave just enough to hold the garlic together. Drizzle 1 tablespoon of olive oil over the garlic, then place it in a small oven-safe casserole dish.

Cover it with a lid or aluminum foil and bake for 1 hour or until the garlic begins to brown.

Squeeze about 1 tablespoon of roasted garlic from the head and combine it with the mayo, lemon juice and salt. Stir well.